I can't really think of much now, its definitely in my top three. I worry a little about the details washing out a bit in smaller applications of it, thats my only real contention. Up close and large scale it looks amazing, but smaller it loses a lot of its detail. Its definitely the most "Boston" thus far. Perhaps there is another way to call to some of the Boston landmarks, Zakim Bridge, Prudential Tower, Hancock Building, Fenway Park where they can stand out a bit more in smaller applications. Not sure how to really do it though.